Blencoe, Iowa has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 3.4 °C (low) to 16 °C (high). Annual precipitation averages 827.3 Millimeters. Blencoe is located in USDA Plant Hardiness Zone 5a. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -11.6 °C | -0.7 °C | 18.03 mm |
| February | -9.4 °C | 1.9 °C | 23.11 mm |
| March | -3.3 °C | 9.4 °C | 45.21 mm |
| April | 2.7 °C | 16.8 °C | 90.17 mm |
| May | 9.6 °C | 22.7 °C | 115.82 mm |
| June | 15.7 °C | 28.3 °C | 123.19 mm |
| July | 17.7 °C | 30.1 °C | 94.23 mm |
| August | 16.2 °C | 28.8 °C | 104.14 mm |
| September | 11 °C | 25.5 °C | 86.87 mm |
| October | 3.8 °C | 18.2 °C | 59.69 mm |
| November | -3.3 °C | 9.4 °C | 36.83 mm |
| December | -8.9 °C | 1.7 °C | 29.97 mm |
| Annual | 3.4 °C | 16 °C | 827.26 mm |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 5a : -28.9°C to -26.1°C |
| Plant Hardiness Zone - 2012 | Zone 5a : -28.9°C to -26.1°C |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |